Abit WB6 User Manual page 70

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PIRQ_0~PIRQ3:
Eleven options are available: Auto, 3, 4, 5, 7, 9, 10, 11, 12, 14, 15. Default setting is Auto.
This item allows the system to automatically specify the IRQ number for the device installed
on PCI slots. Which means, the system can specify the fixed IRQ number for the device
installed on the PCI slots (PCI slot 1 to PCI slot 5). This is a useful function when you want
to fix the IRQ for a specific device.
For example, if you want to move your hard disk to another computer and don't want to
®
re-install Windows NT, then you can specify the IRQ for the device installed on the new
computer to fit the original computer settings.
This feature is for the operating system which will record and fix the PCI configuration
status, if you want to change it.
For the relations between the hardware layout of PIRQ (the signals from the 810 chipset),
INT# (means PCI slot IRQ signals) and devices, please refer to the table below:
Signals PCI slot 1
PIRQ_0 INT A
PIRQ_1 INT B
PIRQ_2 INT C
PIRQ_3 INT D
" Each PCI slot has four INT#s (INT A~INT D).
WB6
PCI slot 2 PCI slot 3
INT B INT C
INT C INT D
INT D INT A
INT A INT B
Chapter3
Onboard
Audio
INT D
INT A
INT B
INT C